Graphics glitches with a 21.5" late 2012 iMac 13,1

Hi all, hope someone can offer some advice.

I've upgraded a 21.5" late 2012 iMac 13,1 from Catalina to Sequoia with OCLP 2.0.2. The install went fine but it's showing graphical glitches and kernel panicking, which wasn't happening on Catalina. This happens randomly but mostly overnight or when the Mac is put to sleep.

The kernel panic log below shows AppleIntelHD4000Graphics drivers being a culprit, which is odd as the iMac has an NVIDIA GeForce GT 650M installed. Is that intentional with OCLP, or is it loading incorrect drivers?

Any ideas gratefully received

panic(cpu 0 caller 0xffffff800bf7d8e4): Sleep transition timed out after 180 seconds while calling power state change callbacks. Suspected bundle: com.apple.driver.AppleIntelHD4000Graphics. Thread 0x2ebb0.

Failure code:: 0x00000004 00000014

Backtracing specified thread

Panicked task 0xffffff9ce49d84c0: 210 threads: pid 0: kernel_task

Backtrace (CPU 0), panicked thread: 0xffffffa1afcd50c8, Frame : Return Address

0xffffff9067053730 : 0xffffff800b9425f7 mach_kernel : _machine_switch_context + 0xd7

0xffffff90670c3c70 : 0xffffff800b81e465 mach_kernel : _thread_block_reason + 0x20d5

0xffffff90670c3d00 : 0xffffff800b81c480 mach_kernel : _thread_block_reason + 0xf0

0xffffff90670c3d50 : 0xffffff800b93f494 mach_kernel : _lck_mtx_lock_wait_x86 + 0x1a4

0xffffff90670c3d90 : 0xffffff800b93ec0b mach_kernel : _lck_mtx_lock_slow + 0x44b

0xffffff90670c3dd0 : 0xffffff7fa1ee80b6 com.apple.driver.AppleIntelHD4000Graphics : __ZN16IntelAccelerator13setPowerStateEmP9IOService + 0x3a

0xffffff90670c3e00 : 0xffffff800bed9d3e mach_kernel : __ZN9IOService19driverSetPowerStateEv + 0x20e

0xffffff90670c3e70 : 0xffffff800bed9a6c mach_kernel : __ZN9IOService15pmDriverCalloutEPS_Pv + 0x9c

0xffffff90670c3ea0 : 0xffffff800b84abb8 mach_kernel : _thread_call_delayed_timer + 0x508

0xffffff90670c3ee0 : 0xffffff800b84bc58 mach_kernel : _thread_call_delayed_timer + 0x15a8

0xffffff90670c3fa0 : 0xffffff800b78119e mach_kernel : _call_continuation + 0x2e

Kernel Extensions in backtrace:

com.apple.driver.AppleIntelHD4000Graphics(16.0.5)[D0CE3687-E23E-304F-A2EA-E07217F86092]@0xffffff7fa1ee2000->0xffffff7fa1f42fff

dependency: com.apple.iokit.IOAcceleratorFamily2(485)[B9FC2054-B954-3297-A8AF-D7CC67F331E6]@0xffffff7fa0925000->0xffffff7fa098efff

dependency: com.apple.iokit.IOGraphicsFamily(598)[BEA504A3-650F-3015-99A5-D8E1801AE95D]@0xffffff7fa0abc000->0xffffff7fa0aeafff

dependency: com.apple.iokit.IOPCIFamily(2.9)[C25DAA7D-95A9-3873-8B8F-7ECEF0542E55]@0xffffff800dbfa000->0xffffff800dc2cfff

dependency: com.apple.iokit.IOSurface(372.1)[DA81AECE-AE3D-3C5F-9FF1-157BE75B1D94]@0xffffff800dd5b000->0xffffff800dd82fff

Process name corresponding to current thread (0xffffffa1afcd50c8): kernel_task

Boot args: keepsyms=1 debug=0x100 -lilubetaall ipc_control_port_options=0 -nokcmismatchpanic

Mac OS version:

24A348

Kernel version:

Darwin Kernel Version 24.0.0: Tue Sep 24 23:36:30 PDT 2024; root:xnu-11215.1.12~1/RELEASE_X86_64

Kernel UUID: 4FECD6FE-6FBC-39D3-8C0C-FB8B93371708

roots installed: 0

KernelCache slide: 0x000000000b400000

KernelCache base: 0xffffff800b600000

Kernel slide: 0x000000000b4e4000

Kernel text base: 0xffffff800b6e4000

__HIB text base: 0xffffff800b500000

System model name: iMac13,1 (Mac-00BE6ED71E35EB86)

System shutdown begun: NO

Panic diags file available: YES (0x0)

Hibernation exit count: 0

System uptime in nanoseconds: 19834716945262

Last Sleep: absolute base_tsc base_nano

Uptime : 0x0000120a2142084a

Sleep : 0x000003a56ab00313 0x000000004115557b 0x0000038475c30e52

Wake : 0x000003a5709b7d56 0x00000000410725ff 0x000003a56ff0a93e

Compressor Info: 4% of compressed pages limit (OK) and 3% of segments limit (OK) with 1 swapfiles and OK swap space

Zone info:

Zone map: 0xffffff91b0c24000 - 0xffffffb1b0c24000

. PGZ : 0xffffff91b0c24000 - 0xffffff91b1c25000

. VM : 0xffffff91b1c25000 - 0xffffff967e68b000

. RO : 0xffffff967e68b000 - 0xffffff9817f57000

. GEN0 : 0xffffff9817f57000 - 0xffffff9ce49bd000

. GEN1 : 0xffffff9ce49bd000 - 0xffffffa1b1423000

. GEN2 : 0xffffffa1b1423000 - 0xffffffa67de89000

. GEN3 : 0xffffffa67de89000 - 0xffffffab4a8f0000

. DATA : 0xffffffab4a8f0000 - 0xffffffb1b0c24000

Metadata: 0xffffff9166b0e000 - 0xffffff9186b0e000

Bitmaps : 0xffffff9186b0e000 - 0xffffff918830e000

Extra : 0 - 0